A rewrite of "MouseLook" to include smooth motion.
Does not use physics or itween - it just averages motions over a moving window.
It does not use clamping because I don't need it personally need it. The clamping implementations of this I have seen don't work that great and a complete solution is harder than it sounds at first.
I gave it a bash and then stopped when I realised how much fiddling it would be and that I don't even need it!
Maybe a problem for another day or someone with more time on their hands than me.